Operation on a Resource after Expiration or Release in Linux kernel - CVE-2026-80936

Vulnerability identifier: #VU149462

CSH Severity: Low

CVSS v4: 0 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-80936

CWE-ID: CWE-672

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to trigger a kernel warning.

The vulnerability exists due to improper resource lifetime management in the mt7925 stop path when tearing down a device during multi-link power-save setup. A local user can tear down the device while delayed power-management work is pending to trigger a kernel warning.

The delayed work is scheduled with a five-second delay.

Linux kernel
Ubuntu
linux (Ubuntu package)
linux-aws (Ubuntu package)
linux-gcp (Ubuntu package)
linux-oracle (Ubuntu package)
linux-ibm (Ubuntu package)
linux-hwe-7.0 (Ubuntu package)
linux-oem-7.0 (Ubuntu package)

Install security update from vendor's repository.

linux (Ubuntu package) - update to 7.0.0-42.42
linux-aws (Ubuntu package) - update to 7.0.0-1016.17
linux-gcp (Ubuntu package) - update to 7.0.0-1016.18
linux-oracle (Ubuntu package) - update to 7.0.0-1015.16
linux-ibm (Ubuntu package) - update to 7.0.0-1017.17
linux-hwe-7.0 (Ubuntu package) - update to 7.0.0-42.42~24.04.1
linux-oem-7.0 (Ubuntu package) - update to 7.0.0-1017.17

• https://git.kernel.org/stable/c/304470333b7f525b23699ea7a7aed3b40ca37ca9
• https://git.kernel.org/stable/c/81faf578320df2dfc682a96baa6e85851dd68b6f
• https://git.kernel.org/stable/c/9e20da749ad229a1aa649ece528721b9652f15e1

• Operation on a Resource after Expiration or Release in Linux kernel mt76 mt7925 driver
• Ubuntu update for linux-oem-7.0
• Ubuntu update for linux, linux-aws, linux-gcp and more